Twist cheap aluminum foil roasting pans and 2 other dollar store items and people can’t believe what this becomes!

Line the interior of the base pan with the black plastic strips to absorb and retain heat.

Place your seed-starting trays or pots inside the base pan and position the entire setup in a sunny spot in your garden.

For a more durable version, consider using thicker aluminum foil pans or reinforcing them with duct tape. If you live in a particularly sunny climate, swap the black plastic for clear plastic to increase light penetration while still trapping heat. Adjust the size of the pans and dome to accommodate larger seed trays or specific plant types. For cooler climates, add a layer of bubble wrap inside the dome for extra insulation. Experiment with different placements in your garden to optimize sunlight exposure throughout the day.